Magnetic fly-wheel.



v C. J. MEYER & E. P. GLEASON.

MAGNETIC FLY WHEEL.

APPLICATION FILED MAR. 1. 1915.

Patented Apr. 23, 1918.

ZQztnesses CHRISTOPHER J". MEYER AND EUGENE I.

ASSIGNORS '10 EVINRUZDE MOEI OR COMPANY,

CORPORATION or WISCONSIN.

cLEAson, or MILWAUKEE, wrsconsm, or" MILWAUKEE, Wiscons n, a

MAGNETIC FLY-WHEEL,

Application filed March 1,

To all whom it may concern:

. Be it known that we, C RISTOPHER J. MEYER and E GENE P. GLEASON, citizens of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful improve ments in Magnetic Fly-VVheels, of which the following is a specification. 1

Our invention relates to improvements in magnetic fly wheels with particular reference to that class of fly wheels which serve the double purpose of a fly wheel and a rotary field magnet for a magneto generator of small fly wheel" magneto generators.

wheel rim. 7 p

The object of our invention is to provide a simple and inexpensive form of magnetic fly wheel, which can be manufactured in large numbers on short notice and which will be particularly suited to the demands inclosed .wholly or partially Within the fly The accompanying drawing shows our improved magnetic fly wheel in perspective with one side partially broken away to show a portion of-the web and one of the magnets in section. I r

A disk A of non-magnetizable material is provided with a central aperture B toreceive a shaft, this being surrounded by a circular row of bolt apertures O to facilitate brought into close proximity at f, f. They may, if desired, be separated from each other by an air gap or any other suitable insullating material, although this is not essentia Pole pieces G, G span the abutting ends of the magnet bars F, F, and are secured thereto and to the rim D by bolts or rivets H. 1.

The fly wheel above described may be Specificati of ers Patent. Patented Apr. 23, 19180 1915. Serial No. 11,431.

constructed by placing the magnetic segments upon a flat disk of non-magnetizable material of greater diameterthan the ring formed by the segment, the outer portions of said disk being thereupon folded in a suitable press over the magnetic ring, thus forming the rim D and inturned flange E. lhe magnetic ring segments will thus be secured in position and the pole pieces can so be subsequently attached.

If desired, the diskAmay be first inserted in a press to form the annular fold or elbow at 05, thus producing a shallow cup or basin into which the magnetic segment bars may be placed'and the margins of the basin subsequently folded inwardly to form the flange It will be observed that the mass of material, which stores the momentum energy of the fly Wheel, will be principally furnished by the magnet bars and pole pieces,

. which may be made of any desired Weight.

The web and rim of the wheel may therefore be composed ofcomparatively light material, which may easily be bent or pressed into the desired shape, and large numbers of these may be quickly formed by employing an ordinary stamping press and suitable dles.

We claim A magnetic fly wheel, comprising a disk of non-magnetic sheet metal having its marginal portion extended laterally to form a cylindrical rim, the free margin'of said rim being curved inwardly and constituting a rounded bead flange, in combination with a set of segmental magnet bars arranged end to end in circular form and inclosed by the rim and frictionally' engaged by the free edge of the bead flange to oppose rotation within the rim, pole pieces at the ends of the magnet bars, and connecting members extending through the pole pieces, seg-- mental magnet bars, and rim. v

In testimony whereof we aflix our signatures in the presence of two witnesses.

CHRISTOPHER J. MEYER. EUGENE P. GLEASON. Witnesses:

'Lnvnnnrr C. WHEELER, I ERMA D. BREMER. 

